Every program that has ever existed does this. So, you're saying that all programs that have ever existed, then, are all AI. You make no distinction whatsoever.

I would say that the more a program thinks on its own which actions to take to maximize its chances of success, the closer to AI it is.

If it's doing exactly what it's explicitly told, then it's not really intelligent, is it?

>>any device that perceives its environment and takes actions that maximize its chance of successfully achieving its goals.

>Every program that has ever existed does this.

No, not every program is self-tuning, nor do they all take inputs.